From the objective function, parameters and constraints associated with process, and using appropriate software, you can solve the problem through help
If you may change your methodology, the response surface methodology in the design of experiment in Minitab program can do the optimization in a powerful manner.
2. Secondly you have to think of, whether you want to carry out constrained optimization or unconstrained optimization problem.
3. An empirical or mathematical equation should be developed for the object function which may be a single objective or multi-objective.
4. It is important that whether you are going to maximize or minimize the objective. Because, most of the coding are designed for minimizing problems only.
5. Give the lower bound and upper bound of the chosen parameters.
6. You can use the coding available in internet or you can write your own coding in C++, Java or Matlab.
7. Find the optimum condition and perform an confirmation experiment for validating the result.